Explosive-engine.



M. GOLDBERGER. BXPLOSIVB ENGINE. APPLIUATION FILED Nov. 15, 1910.

Patented June 30, 1914.

2 SHEETS-SHEET 1.

M. GOLDBERGER.

EXPLOSIVE ENGINE.

APPLICATION FILED NOV. 15, 1910.

Patented June 30, 1914.

2 SHEETS-BHEET 2.

arritmias eornnnnenn. or ranas, runnen.

- 'rnosrvnnuerun T0-all whom it 'mo/1] com/icm j Be it known that I, Marianistas GOLD- nnnoun, a subgect'of the Em eror of Austria- Hungary, residing at 'Par1s,l1`rance, havev invented certain newl and useful lmprovements 1n `lflaplosive-Eng'gg'lnes, of which the followingis a full, clear, and exact speciare as strong, as those of an automobile engine', itis of extremely light weight because all superfluous parts have beenomitted so that themachine can easily be started and i is Well balanced, the Working parts of which allow of a convenient and ready inspection, starting, etc.

To enable others to understand my invention, reference is had to the accompanying drawings, in which:

Figure 1 1s a longitudinal elevation partly in section of the machine according to the present invention. Fig. 2-is e. cross-section on line A-l. of Fig., 1. Fig. 3 is a plan view of a piston.

The motor is arranged in a frame-Work composed of two parts, anjupgper one 2 and a lower one 3 strongly reini rights i.. 1

The upper part 2 of the frame carries the' journal boxes 5, 6 of the motor shaft 13 and is fitted with the clamping lugs 7, 7 on the front and von the rear so as to be attached to the frame of the dying machine.

@n the lower part 3 of the frame the stationary pistons 10 are secured byrbolts or the like. Upon these stationary pistons 1G lthe cylinders slide and transmit the explosive force to the engine shaft by means of `the crank shafts 9.

@n account of the reciprocatory movement and the peculiarhelical form of .the ribs the cylinders 12 are rapidly cooledl While the ribs do not oder any perceptible res lsisi'sanceto the motion of the cylinders and thus do not the motor.

produce any braking erlernt upon l l Y.

`Specilcation of Letters at'ent. application inea remember is. loro. serial uo. :scatta orced by up- Patenten am@ so. rei a.

` The helical ribs as showh, permit a more rapid cooling of the cylinders than horizontally disposed ribs would, which would allow the formation of an air cushion between them. Moreover, horizontal ribs Will present a. much greater resistance to the motion. of the cylinders. While vertical ribs would increase the cooling effect, they would not reinforce thecylinder as Wellas helical ribs do. The construction of the ribs'as helical ones therefore produces the folloW- ing good results:

The air surrounding the cylinder and cooling it is constantly renewed, and the ribs present the least possible' resistance to the operation of lthe cylinderl and thus do not produce any braking effect upon the motor. The lcooling of the cylinders is effected by the current of air created by the fly-Wheel, which current traverses the mantle of the motor provided with perforations at its lower part. I

rlhe feed valvesv for the supply of the explosive mixture to the cylinders 12 are situated in the piston 10 and .thus inclosed, it will be seen that they can easil be rcmoved by detaching the pitman 9 rom the wrist pin 18 and lifting the cylinder 12. Each of these stationary pistons as shown in Figs. 2 and 3 comprises a channel 16 for the carbureted gases connected by a tube controlled by the valve 15 during the operation of the movable cylinder.

yll`he cylinders 12 carry at their extreme end the Wrist pin 18 of the base of the connesting rod. The crank shaft 13 running in the boxes 5, 6 is not subject to torsion usually caused by the vibrations of the mass of thmdy-Wheel 19 during its starting and running periods, as the ily-Wheel is not xedly secured directly to the shaft, but by the intermediary of a roller ball-bearing 20 on the box 6 and the impulse is given by a yielding dcgv21 keyed to the .driving shaft. The hub of the dog 21 carries the coupling plate 22 for the propeller or for a reduc- This originaly method has the irg gear. y e ect of relieving entirely the drivlng shaft.

of the Weight of the ily- Wheel and of allowing the seid Fry-Wheel to automaticall balance itself on its axis,A the roller bearing 20 greatly relieves the rear journal 6 of the direct iniluence ofthe Weight of the dy=wheel its use is optional and when done away with the magneto 30 may be keyed to the end o the shaft. The oil distribution is insured by 'the tank 32 installed at the highest point of' the engine and constituting a ravity lubrication device with regulatlon eed oil cups. l

I claim y 1'. Anexplosive -engine for aviation purposes comprising in combination, a frame 2o. composed of connected u per and lower" members, the upper of w ich supports a crank shaft, journal boxes on the upper member at the ends of said shaft, a iiywheel rotating on ball-bearings upon one osaid boxes, a stationary piston secured to the lower member of the frame, and a cylinder secured to said crank shaft by a. rod and com osed of connected u per andl lower mem rs, the upper of w ich supports'a crank shaft, journal box'es on the up er` member atthe ends of said shaft, a ywheel rotating on ball-bearings upon one of said boxes, a stationary piston secured to the lower member of the iframe, a cylinder secured to said crank shaft by a rod and reciprocating on said stationary piston, heat` radiating rlbs spirally arranged on said. cylinder, means for supplying explosive mixture to said'piston and means for con-' trolling the admission of the explosive mixture to said cylinder for reciprocation upon saidpiston, substantially as described. J In witness whereof I have hereunto set my hand in the resence of two witnesses..

MA IMILIEN GOLDBERGER.

Witnesses: y

HENRI BOETTCHER, BARTIEY F; Yos'r.. 

